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Finding the Fourth Proportional to 127.99, 174.25 and 125.83

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Solution

The fourth proportional to 127.99, 174.25 and 125.83 is: 171.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.99 : 174.25 = 125.83 : x
  2. Step 2: Convert to fraction form
    127.99/174.25 = 125.83/x
  3. Step 3: Cross multiply
    127.99x = 174.25 × 125.83
  4. Step 4: Simplify right side
    127.99x = 21,925.88
  5. Step 5: Solve for x
    x = 21,925.88/127.99
  6. Step 6: Final answer
    x = 171.31

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.